Bengaluru, India to Helsinki is an approximately 15- hour flight. You can also do a combination of flight and ferry; or do a combination of flight and train. The time zone difference when traveling from Bengaluru to Helsinki is minus 3.5 hours. Expect much colder temperatures when traveling from Bengaluru in October; daily highs in Helsinki reach 10°C and lows reach 1°C. Wrap up your sightseeing on the 25th (Fri) early enough to travel back home.